provide a version string even if no commit hash is available

Author: kolunmi

version.sh

@@ -2,9 +2,11 @@
 
 INSTR="$1"
 
+FALLBACK_VERSION='0.2.0 no-git-info'
+
 case "$INSTR" in
     get-vcs)
-        git -C "$MESON_SOURCE_ROOT" describe --always --dirty
+        git -C "$MESON_SOURCE_ROOT" describe --always --dirty || echo "$FALLBACK_VERSION"
         ;;
     *)
         echo invalid arguments 1>&2